Mares Syncro Power Buoyancy Compensator BC Size: MEDIUM Scuba Diving Vest. This item was only used a couple of times and it is in perfect 9+ out of 10 condition as you can see in the photos. The item "Mares Syncro Power Buoyancy Compensator BC Scuba Diving Vest MINT Condition (5F)" is in sale since Tuesday, April 2, 2019.